IntraLinks Deal Flow Indicator(TM) Shows Q3 2010 Global M&A Deal Activity Has Increased 38 Percent Over Q3 2009

Results Show Six Straight Quarters of Growth in M&A Deal Volume, With a 68 Percent Increase From Q1 2009

NEW YORK, October 18, 2010 - The Q3 2010 IntraLinks Deal Flow Indicator(TM) (DFI) was released today
and reports a 38 percent increase in global M&A deal activity in Q3 2010
versus Q3 2009. In the last quarter, deal activity is up nine percent
compared to Q2 2010, a 68 percent increase from the Q1 2009 low.

The significant increase in M&A deal activity over the last 12 months has
been driven largely by growth in the emerging markets. Asia-Pacific has led
the momentum with a 54 percent increase in Q3 2010 compared to Q3 2009,
followed by South America (52 percent), North America (40 percent) and lastly
Europe/Middle East/Africa (28 percent). Globally, Q3 2010 average deal size
is up six percent from Q2 2010, with the largest increases seen in deals in
the emerging markets. Also, for the first three quarters of 2010, deal size
is up 13 percent globally from the same period in 2009.

"Our Deal Flow Indicator also tracks a positive shift from certain
industries. From Q3 2009, major deal increases have been experienced in the
Telecom and Consumer Products industries and specifically in the last quarter
there have been deal increases in the Energy and Life Sciences industries,"
said Matt Porzio, vice president of Product Marketing. "Overall there has
been tremendous growth in M&A deal activity and we will continue to monitor
momentum and track trends to share with the industry."

The overall positive trends are consistent with the following factors in
the marketplace:

    - General improvement and stability in the market
    - Impending tax environment changes and stockpiles of committed capital
      have provided the return of private equity buyers and sellers
    - Reduced strategic buyer fear of "double dip" recession resulting in
      more exploration of opportunities to supplement slow organic growth
      prospects and enter new markets

IntraLinks has been a leading global provider of M&A virtual data rooms
for more than 10 years. The IntraLinks Deal Flow Indicator is calculated
using the total volume of IntraLinks exchanges that were proposed for use by
deal teams initiating projects during the previous quarter. The totals are
then analyzed by global regions and compared to previous time periods. This
report is based on observations and subjective interpretations of M&A deal
activity and is not intended to be an indicator of IntraLinks' business
performance or operating results for any prior or future period.

Read the Q3 2010 IntraLinks Deal Flow Indicator at
www.intralinks.com/dealflow

About IntraLinks

IntraLinks (NYSE: IL) is a leading global provider of
Software-as-a-Service solutions for securely managing content, exchanging
critical business information and collaborating within and among
organizations. More than 1.3 million professionals in industries including
financial services, pharmaceutical, biotechnology, consumer, energy,
industrial, legal, insurance, real estate and technology, as well as
government agencies, have utilized IntraLinks' easy-to-use, cloud-based
solutions. IntraLinks users can accelerate information-intensive business
processes and workflows, meet regulatory and risk management requirements and
collaborate with customers, partners and counterparties in a secure,
auditable and compliant manner. IntraLinks counts 800 of the Fortune 1000 as
users. For more information, visit www.intralinks.com or
blog.intralinks.com. You can also follow IntraLinks on Twitter at
twitter.com/intralinks and Facebook at
www.facebook.com/IntraLinks.

Forward Looking Statements

This press release contains forward-looking statements that are made
pursuant to the safe harbor provisions of the Private Securities Litigation
Reform Act of 1995. This press release contains express or implied
forward-looking statements that are not based on historical information
relating to, among other things, expectations and assumptions concerning
future business growth, and management's plans, objectives, and strategies.
These statements are neither promises nor guarantees, but are subject to a
variety of risks and uncertainties, many of which are beyond our control,
which could cause actual results to differ materially from those contemplated
in these forward-looking statements. In particular, the risks and
uncertainties include, among other things: the uncertainty of our future
profitability; our ability to sustain positive cash flow; periodic
fluctuations in our operating results; our ability to maintain the security
and integrity of our systems; our ability to increase our penetration in our
principal existing markets and expand into additional markets; our dependence
on the volume of financial and strategic business transactions; our
dependence on customer referrals; our ability to maintain and expand our
direct sales capabilities; our ability to develop and maintain strategic
relationships to sell and deliver our solutions; customer renewal rates; our
ability to maintain the compatibility of our services with third-party
applications; competition; our ability to adapt to changing technologies;
interruptions or delays in our service; international risks; our ability to
protect our intellectual property; and risks related to changes in laws,
regulations or governmental policy. Further information on these and other
factors that could affect our financial results is contained in our public
filings with the Securities and Exchange Commission (SEC) from time to time,
including our Registration Statement on Form S-1 (Registration No.
333-165991), which was declared effective on August 5, 2010, as well as our
Quarterly Report on Form 10-Q for the period ended June 30, 2010 and
subsequent filings with the SEC. Existing and prospective investors are
cautioned not to place undue reliance on these forward-looking statements,
which speak only as of the date hereof. We undertake no obligation to update
or revise the information contained in this press release, whether as a
result of new information, future events or circumstances or otherwise.

IntraLinks and the IntraLinks logo are registered trademarks of
IntraLinks Holdings, Inc. All rights reserved.

    Media Contact:
    Michael Baldwin
    IntraLinks
    +1-212-543-7791
    mbaldwin@intralinks.com

    Investor Contact:
    David Roy
    IntraLinks
    +1-212-342-7690
    droy@intralinks.com

Media Contact: Michael Baldwin, IntraLinks, +1-212-543-7791, mbaldwin at intralinks.com; Investor Contact: David Roy, IntraLinks, +1-212-342-7690, droy at intralinks.com